Gate-valve.



UN TED STATES PATENT OFFICE.

WILLIAM EDWARD ORIST, OF NEW YORK, N. Y., ASSIGNOR TO THE ORIST VALVE MFG. 00., OF CHITTENANGO, NEW

NEW YORK.

YORK, A CORPORATION OF GATE-VALVE.

To all whom, it may concern:

. Be it known that I, WILLIAM EDWARD CRIsT, a citizen ofthe United States, residing at New York city, Brooklyn, county of Kings, and States of New York, have invent- I a longitudinal section of my improved gatevalve; Fig. 2, an end view, partly in section thereof; Fig. 3, a cross-section on line 3 3, Fig. 1; and Fig. 4, a detail of the valve-disks.

The letter A represents a valve-casing having ingress and egress couplingsa and an intervening valve-chamber a. This chamber tapers from top to bottom to form converging valve-seats o The valve is made sectional, being com posed of two disk-shaped halves b, which are alike in construction. Each disk I) has a flat.

outer surface adapted to engage seat a and a dished. inner surface. Integral with the rim 6 of the latter is formed a semitubular upwardly-extending. contracted neck or nutsection 6 When the parts are assembled, the two nut-sections b collectively form a split nut adapted for the reception of the lower threaded end of the valve-spindle c. This spindle carries a hand-wheel c and a collar engaging a recess (1, formed between the valve-housing d and a stufling-box e, to prevent an axial dis lacement of the spindle.

To guide the dis is b, they are provided with laterally-projecting flanges b engaging inwardly-extending parallel ribs 0, of valvechamber a. provided on one side of its inner face with an integral tongue or knife-edge b, V-shaped in Specification of Letters Patent.

Application filed March 9, 1905- Serial No. 249,172.

Each of the disks 1) is further Patented May 1, 1906.

vertical section, and on its other side With a corresponding V-shaped bearing b Fig. 1, the knife-ed e of one disk engaging the bearing of the ot er disk. In this way the disks are fulcrumed to one another and may independently adjust themselves to their seats to form a tight joint. So, also, either disk is free to clear dirt or other obstructions that may pack its seat without influencing the proper working of the other disk.

The knife-edges b and V-shaped bearings b interlock the disks in such a manner that they Will move in unison and that an uneven strain on the nut-sections b is avoided. The apex of each knife-edge b, as well as that of each bearing 6 is rounded in cross-section, 3, to prevent lateral displacement of the is s.

The tilting movement of the disks 6 is limited by a pair of inwardly-extending lower stops 1), that project beyond the inner faces of the disks. such that when the disks are tilted to their maximum extent the threaded spindle 0 still maintains its engagement with the nut-sections N. Y

It will be seen that my improved valve is composed of a small number of parts, is not apt to get out of order, avoids uneven strain, and insures tight closing of the ports.

What I claim is In a gate-valve, a pair of threaded valvedisks having each on one side an integral tongue V-shaped in longitudinal section and rounded in cross-section, and on the other side a correspondingly-shaped bearing, the tongue of one disk being alined with the bearing of the other disk, combined with a spin- Elleil engaging the disks, substantially as speci- Signed by me at New York city, (Manhattan,) New York, this 8th day of March, 1905.

WILLIAM EDWARD ORIST. Witnesses:

WILLIAM ScHULz, FRANK v. BRIESEN.

The length of these stops is 

